Accidentally duo'd The Fabled High Priestess, got nosy while hunting quest parts for the anniversary clicky, aggrod two sirens and the Fabled High Priestess.
Seemed like a straightup melee fight, burned the adds and killed the Fabled. Hit kinda hard, whitecon at 70.
Popped near -530, -334 with the other sirens. Dropped regular arms, fabled arms, spell:Arch Lich, and Lock of Siren's Hair.